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soc: Fix description of rtc_config_t.tieh, add macros

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Usage of TIEH was correct but description had 1.8V & 3.3V backwards.

Add macro definitions for TIEH values to improve readability.
This commit is contained in:
Angus Gratton
2018-05-25 14:52:41 +10:00
committed by Angus Gratton
parent c7bedc80c1
commit d775cc4c4c
4 changed files with 8 additions and 5 deletions
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4
components/soc/esp32/rtc_init.c
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@@ -132,8 +132,8 @@ rtc_vddsdio_config_t rtc_vddsdio_get_config()
// Otherwise, VDD_SDIO is controlled by bootstrapping pin
uint32_t strap_reg = REG_READ(GPIO_STRAP_REG);
result.force = 0;
result.tieh = (strap_reg & BIT(5)) ? 0 : 1;
result.enable = result.tieh == 0; // only power on the regulator if VDD=1.8
result.tieh = (strap_reg & BIT(5)) ? RTC_VDDSDIO_TIEH_1_8V : RTC_VDDSDIO_TIEH_3_3V;
result.enable = result.tieh == RTC_VDDSDIO_TIEH_1_8V; // only power on the regulator if VDD=1.8
return result;
}